Try

https://github.com/Microsoft/ReportingServicesTools

That’s what our guys use.

What the error message on failover? You probably have an orphan account and you will need to fix it with the sp_change_users_login command. The problem will reoccur on switch back...

Go Azure cloud IaaS and scale as needed or Azure Analysis Services if you want the best 😉

Have you set up a witness share? For a windows cluster you need an odd number of nodes so you can get node majority. So two servers in a windows...

I checked and MDS need EE on 2012

https://docs.microsoft.com/en-us/sql/master-data-services/install-windows/database-requirements-master-data-services

MDS on 2016 is heaps better, faster and the business rules are easier to use plus you can have tsql based rules.

Still...

Have a look in the MDS configuration tool and you might have an upgrade button for the error:

The client version is incompatible with the database version. Ask your administrator to...

I had a similar error:

Failed to deploy project. For more information, query the operation_messages view for the operation identifier '192473'

So I ran the following SQL:

SELECT [message]

FROM [SSISDB].[internal].[operation_messages]

...